$factory = cache_factory::instance();
$definition = $factory->create_definition($component, $area);
if ($definition->has_required_identifiers()) {
// We will have to purge the stores used by this definition.
cache_helper::purge_stores_used_by_definition($component, $area);
} else {
// Alrighty we can purge just the data belonging to this definition.
cache_helper::purge_by_definition($component, $area);
}
redirect($PAGE->url, get_string('purgedefinitionsuccess', 'cache'), 5);
break;
case 'purgestore':
case 'purge':
// Purge a store cache.
$store = required_param('store', PARAM_TEXT);
cache_helper::purge_store($store);
redirect($PAGE->url, get_string('purgestoresuccess', 'cache'), 5);
break;
case 'newlockinstance':
// Adds a new lock instance.
$lock = required_param('lock', PARAM_ALPHANUMEXT);
$mform = cache_administration_helper::get_add_lock_form($lock);
if ($mform->is_cancelled()) {
redirect($PAGE->url);
} else {
if ($data = $mform->get_data()) {
$factory = cache_factory::instance();
$config = $factory->create_config_instance(true);
$name = $data->name;
$data = cache_administration_helper::get_lock_configuration_from_data($lock, $data);
$config->add_lock_instance($name, $lock, $data);
